JPS58225426A - Multiplexing processor - Google Patents

Abstract

PURPOSE:To reduce the scale of an input circuit part and at the same time to improve the capacity of a multiplexing processor with no increment of the number of input points, by sacnning the input state for each row and column after distributing the input groups into a matrix with connection. CONSTITUTION:The square wave given from an oscillator 13 increases successively the value of a column counter 16 and accordingly opens successively a data selector one by one area to perform a scan of an input matrix circuit 3 in the column direction. While the increment pulse 15 delivered from the counter 16 is supplied to a row counter 20 and turned into a signal which controls the scan of the circuit 3 of the row direction through a decoder 21. At the same time, the state of the circuit 3 is fed to an encoder 18 through the selctor 17. The outputs of the encoder 18 and a row counter 20 are fed to a processing circuit 9 and monitored. Thus it is possible to decided the state of an external contact connected to the circuit 3.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention provides a monitoring device that processes binary parallel ON' and ``OFF'' information, performs appropriate processing according to the input information, and then outputs the information. Or it relates to multiple housing processing/management equipment such as a control device.

[Technical background of the invention]

Generally, when processing input information in a processing device, it is necessary to have an external circuit separated from an internal circuit of the processing device, or an input circuit that adjusts the signal level and removes noise. The input circuit of the processing device requires a separate input function for each input point, and therefore, as the number of inputs increases, the scale of the input circuit increases proportionally. In recent processing devices using integrated circuits, etc., the size occupied by the processing circuit does not increase any further even if the processing content increases or becomes more complex, and the configuration may even change within a certain range. do not have.

[Problems with background technology]

However, as input circuits and output circuits require individual functions for each processing point, large-scale processing equipment consists mostly of input and output circuits, making it difficult to process It is no longer possible to take full advantage of the characteristics of the circuit. This input circuit or output circuit portion may be physically large depending on the target signal or the specifications required for the circuit portion, and it is significant that the scale of the processing device increases proportionally. This is a drawback.

[Purpose of the invention]

The present invention was made in view of the above-mentioned circumstances, and its purpose is to reduce the scale of the input circuit part to make it more compact and efficient, and to increase the number of manual points in proportion to the number of points added. It is an object of the present invention to provide a multiplexing processing device whose capacity can be easily expanded without increasing hardware.

[Summary of the invention]

In order to achieve the above object, the present invention arranges and connects input groups in a matrix or box shape with respect to an input circuit of a processing device that handles contacts or mutually separated digital inputs.
By scanning the input state row by row and column by column,
It is characterized in that it is extracted as an input position code and status information.

[Embodiments of the invention]

An embodiment of the present invention shown in the drawings will be described below.

FIG. 1 shows the conceptual configuration when the contacts of the multiplexing processing device according to the present invention are input, FIG. 2 shows an example of the configuration of the input matrix circuit in FIG. 1, and FIG. The figure also shows a structural concept of the scanning input circuit.

However, in FIG. 2 and the input matrix circuits cited in FIG. 2, the input signal contacts are included in the matrix. j As shown in FIG. 1, the multiplexing processing device 1 has an overall configuration including an input matrix, a matrix 3, which connects a plurality of input contacts to which external contacts 2, etc. are input, and a manual matrix, scanning circuit 3 with its scanning output 4, etc., receives an input open/closed state signal 6, etc. for the scanning output, and outputs the position and state of a closed or open contact as a contact position code 6; A processing circuit that determines whether a contact is closed or open based on the contact position code 6 given by the circuit 7 and the scanning input circuit 1, executes necessary processing, and outputs an output circuit control signal 8, etc. 9, and output circuit control signal 8
and an output circuit 11 which converts it into an appropriate signal form and outputs it as a processing device output signal 10. The closed or open information of a contact belonging to a row or column selected by the scanning output 4 of the circuit 7 can be output as an open/close state signal 5, etc., regardless of the state of the contacts belonging to other rows or columns. As shown in FIG.
It is constructed by connecting the pin in series to the input contact.

Further, as shown in FIG. 3, the scanning input circuit 7 connected to the matrix circuit 3 divides the frequency of the rectangular wave output of the oscillator 13 and the output of the oscillator 13 and generates a binary signal. A column counter 16 outputs an increment pulse 16 every time the mowing input selection signal 14 completes one cycle; a data selector 17 that sequentially selects and outputs only specific column components such as the input open/close state signal 5 based on numerical values; an encoder 18 that encodes the output of the data selector 11 and outputs it to the processing circuit 9; A row counter 20 receives the input of the signal J6, divides the frequency thereof, and outputs a binary row selection signal 19, etc.
and a decoder 2 which decodes the row selection signal 149 and the like and outputs a scanning output 4 which scans the input matrix and the matrix circuit 30 in the row direction.

In this case, the contact position code sent to the processing circuit 9 is composed of the outputs of both the encoder J8 and the row counter 20.
The processing circuit 9 is configured to perform control based on the contact state inputted as a code.

Next, the operation of this device will be explained based on FIG.

In the figure, the square wave from oscillator 13 is generated by column counter J6.
is sequentially incremented, and only one corresponding input of the data selector 17 to which the output, the dynamic input selection signal 14, is input is sequentially opened. When the column counter 16 completes one cycle, the input selection of the data selector 17 also completes one cycle, and the first input dart is opened. The increment pulse 15 outputted as the column counter 16 completes one cycle is applied to the row counter 2.
0, and by the function of the decoder 21 which sequentially increments it and receives the row selection signal 19, etc., it acts as a signal to control scanning of the input matrix circuit 3 in the row direction. Corresponding to the internal state of the row counter 20, only the specific output of the decoder 21 becomes '11', so that a level "'l" signal is applied to the selected input matrix and specific contacts in the box circuit 3. However, if there is a closed contact belonging to this selected row, the column component of the input open/close state signal corresponding to the column to which the closed contact belongs becomes 1#.

Also, the output square wave column counter 16 of the oscillator 13 is incremented, and thereby the data selector 17
The input matrix circuit 3 is scanned in the column direction by sequentially opening one position at a time, and the row counter 2o increments the increment value outputted when the column counter J6 is cycled. A scan is performed. Due to this action, the input matrix.

The states of all the contacts belonging to the network circuit 3 are sequentially inputted to the data selector 17 and the encoder J8. The data selector 170 outputs are all 0'' for the output of the unselected dart, l'' for the output of the selected dart when the input is 'l', and '0# when the input is not 'l'.
becomes. Therefore, the specifics selected by scanning the rows and columns. Contact crab closed. When, y” / Yauch, 1..

'1#' appears in the corresponding output of the column to which the first contact belongs, and if it is open, all outputs become '0'. As a result, when l# appears in the output of the data selector 17, it is known that the contact selected by scanning is closed, and at which position of the output of the data selector 17 The column to which the contact belongs and the row to which the contact belongs can be determined by the count value of the row counter.The encoder 18 converts the output of the data selector 17 into two.
Although the information is encoded into a decimal code or the like and displayed, it is not always necessary.

On the other hand, the outputs of the encoder 18 and the row counter 20 are input to the processing circuit 9, but by monitoring the input codes on both the encoder 18 side and the row counter 20 side, all the outputs connected to the input matrix circuit 3 are input. The state of the external contact 2 can be determined. Therefore, in this multiplexing processing device, by configuring the processing circuit 9 to perform processing according to the code state, the state of all input contacts can be adjusted without having an input circuit function for each external contact. Corresponding processing can be performed.

Note that the contact matrix and the recirculation prevention element 12 used in the box circuit 3 are designed to prevent the state of the contacts belonging to a row other than the scanning row from adversely affecting the readout of the state of the scanning contacts due to recirculation. This is to avoid.

As mentioned above, in this multiplexing processing device, it is possible to multiplex and share functions without providing an input circuit section as a separate function for each signal.
The amount of hardware can be significantly reduced. In particular, when using contacts as inputs, it is desirable to use a high voltage for contact reliability, and in the case of devices with multiple inputs, conventional methods could result in a very large device size, but this multiplexing processing device For example, if the numbers of row components and column components of the contact matrix and circuit are the same, the number of required input open/close status signals or scanning output signals is 1/2 of the total number of input points.
It is the smallest integer that is raised to the power or larger. - If the total number of input points is 250 points as a column, 16 points are sufficient for each, and #t is approximately V8 in scale, making it possible to significantly reduce the amount of hardware and downsize the device. As a result, even when handling high voltage as an input circuit, the proportion of the input circuit in the entire device is extremely small, making the device much smaller and cheaper than conventional methods. This can be achieved and brings great benefits. Furthermore, if it becomes necessary to add more inputs to the processing unit,
With conventional methods, it was often difficult to add more input points due to restrictions on the size of the equipment, but with this multiplexing processing equipment, the equipment size is originally small, or the number of input points can be greatly increased by adding a small amount of equipment. Since it is possible to increase the amount, it is possible to respond extremely flexibly.
In the scanning input circuit shown in FIG. 3, an encoder J8 is added to the output stage of the data selector 17, but as described above, this is not necessarily necessary. However, when the encoder 18 is added, it is possible to reduce the number of input signals to the processing circuit. Furthermore, the encoder may be added to the row counter output side.

In addition, in Fig. 3, the output of decoder 2 is set to 1'' when selected by scanning (1111 can be any voltage), but this means that the selected output can be in a different state from the non-selected output. However, in that case, the direction of the rotation prevention element 12 in the input matrix circuit 3,
Alternatively, the functions of the data selector 17 etc. may be changed.

In the explanation so far, the procedure has been described in which the columns are scanned first and the rows are scanned later, but the reverse configuration is also possible, and the rows and columns may be reversed.

Further, although the scanning input circuit shown in FIG. 2 is illustrated as an example of a hardware configuration, this part can also be configured by software, or it can be included integrally within the processing circuit. In these cases, the scanning input circuit section 1 requires t''''4'' scanning to the 4-per-Woof contact; only the output circuit for sending out the 1-scan output and the input circuit for reading the contact status are required. .

In addition to the above, the inputs that can be used for this device are not only contacts but also mutually separated 'ON' and 'OF' inputs.
An F' signal or a voltage signal can also be used.

〔Effect of the invention〕

As explained above, according to the present invention, the scale of the input circuit part can be reduced to make it more compact, and the capacity can be easily increased without increasing the hardware in proportion to the addition of input points. It is possible to provide an extremely reliable multiplexing processing device that can expand the number of applications.

[Brief explanation of drawings]

FIG. 1 is a conceptual diagram showing an embodiment of the multiplexing processing device of the present invention, FIG. 2 is a configuration diagram showing an example of the contact matrix circuit in FIG. 1, and FIG. 3 is an example of the scanning input circuit in FIG. 1. FIG. J...Multiplex processing device, 2...External contact, 3...
Input matrix, matrix circuit, 4... scanning circuit 5...
Input opening/closing state signal, 6... Contact position code, 1... Scanning input circuit, 8... Output circuit control signal, 11... Output circuit, 12... Double sinking prevention element, 13. ...Oscillator, 14...Dynamic input selection signal, 15...Increment base pulse, J 6...Tari counter, 17...
Data selector, 18... Encoder, 19... Row selection signal, 20... Row counter, 21... Decoder. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (1)

[Claims] In a processing device that inputs and processes a plurality of contacts or mutually separated digital input signals and outputs the processing result of i, the plurality of contacts or a mutually separated digital input group is connected to a circuit such as a diode. After connecting the prevention elements in series, the input matrix is arranged and connected in a matrix or box shape, and these input groups are scanned in units of rows or columns of the matrix circuit, and the inputs belonging to each row or column are turned on. ``state'' and ``OFF'' state are checked sequentially, and the position of the input in the ``ON'' state is determined by two codes: the position code of the row or column to which it belongs, and the code representing the position within that row or column. A scanning input circuit that displays information indicating OFF', a device code constituted by this scanning input circuit, and ON', ``OFF''.
A multiplex processing device characterized by comprising a processing circuit capable of processing information.